﻿//  Copyright 2021 Google Inc. All Rights Reserved.
//
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.

#nullable enable

using NtCoreLib.Win32.Service.Interop;

namespace NtCoreLib.Win32.Service.Triggers;

/// <summary>
/// Service trigger for a named pipe.
/// </summary>
public sealed class NamedPipeServiceTriggerInformation : ServiceTriggerInformation
{
    /// <summary>
    /// The path to the named pipe.
    /// </summary>
    public string? PipePath { get; }

    internal NamedPipeServiceTriggerInformation(SERVICE_TRIGGER trigger)
        : base(trigger)
    {
        if (CustomData.Count > 0
            && CustomData[0].DataType == ServiceTriggerDataType.String)
        {
            PipePath = $@"\??\pipe\{CustomData[0].Data}";
        }
    }

    private protected override string GetSubTypeDescription()
    {
        return $"{base.GetSubTypeDescription()} {PipePath}";
    }

    /// <inheritdoc/>
    public override void Trigger()
    {
        NtFile.Open(PipePath, null, FileAccessRights.MaximumAllowed,
            FileShareMode.None, FileOpenOptions.None, false).Dispose();
    }
}
